That's just not true. If I asked 100 euro for my program, it would be better? It is a myth (and people do believe it) that commercial software is better than free. But I can honestly tell you, and not just because my program is free, that commercial software usually is inferior to free software.
No software is guarenteed to work. No matter how much you pay for it.
But if you don't like the program, that's ok for me. We are free to choose our own, and if other software suits you better, I will not argue on that . That's why there is alot of software that does the same, so that everyone can choose their favorite.